How do I get breading to stick to pre-cooked chicken for pan frying?

The three step method should work for this.

This being dredge the cooked chicken in flour, then egg wash and finally the bread crumbs(ideally Panko bread crumbs).

The other way is to do a tempura batter. But to make sure the tempura batter is effective, make sure to dredge the chicken in flour first.

Good Luck,

I will be doing this soon and I can give the results. The three step method is the best method I have found for breading and frying meats in general.

The typical issue is that dry won't stick to dry, and wet won't stick to wet, so you have to alternate but not build up too thick of a given layer.

As raw chicken tends to be wet, you add a little flour to it ... but if it's already dried from the cooking, you'd be better off going straight to wet (buttermilk, egg wash, etc.), and then getting the breadcrumbs onto it.

Also, too thick of any of the layers will cause problems, so if you are flouring, make sure that you knock off any loose flour before going into the wet, and then let the wet drip as best you can before going into the breadcrumbs. Also, if it was too wet when coming out of the bag (which you hint at), you might have similar problems. If you're going to flour, you want it slightly damp, but not overly wet; patting dry might've helped.

I've also seen quite a few recipes that call for letting the breaded items sit on a wire rack for a while before attempting to fry, and most claim it's for improved adhesion, but I don't know what the specific process involved is (if it's just simple drying out of the wet layer, or if there's some other process going on).

Dave Arnold over at Cooking Issues says the following:

What I do is brine and cook the chicken breast in salted milk at 63 degrees in a ziploc, take it out of the bag hot, put the chicken on a cooling rack, force dry the outside with a convection, then flour/(buttermilk+egg+baking powder/baking soda/salt/pepper)/flour, then fry at 375F. I haven't had problems with adhesion.

I just put egg on it, let it drip off a little, then just bread crumbs. I deep fry it, OR pan fry it this way and it has never failed me yet.

Drying the chicken shouldn't have been an issue (or not much of one) as long as the flour was sticking. My guess would be that when raw, the heat from cooking causes the flour & egg to bind with the surface of the chicken. Since the proteins in cooked chicken are already denatured, this can't happen when you're using sous vide chix.

I cannot think of a way around this though. Hopefully someone else here can.

Use cornflour instead, or at least a 50/50 ratio at least.

Alternatively, try a little grated cheese in the breadcrumbs.

ok y'all, I just put this to the test on a chicken thigh: I was using Lard to fry for the first time and the 2nd batch cooked much quicker than the first so it was a little burnt (little burnt means just small dots of black charcoal). I tried to shave off the black spots with a serrated knife but ended up with gaping holes. Turns out the chicken was still a little pink so, having nothing to lose I tried the following:

I soaked those two fried thighs with the crusty floured skin still on (except where the burnt spots used to be) in buttermilk,and rolled it in seasoned flour, and fried it in the same lard at the same medium temperature (the chicken was room temp). It took about 10 minutes and I could not believe my eyes, the holes were patched,it worked fantastically!!! This was my first experiment so take it as that but it DID work to my amazement! I credit the buttermilk with keeping this in one piece (and the second coating did not try to fall off the original at all).